High Quality Content by WIKIPEDIA articles! Oliver Valentine is a fictional character from the BBC medical drama Holby City, played by actor James Anderson. He first appeared in the eleventh series episode "Proceed With Caution", broadcast on 9 June 2009. Oliver was introduced alongside his older sister, Penny (Emma Catherwood), as a Foundation House Officer 1 (F1) on rotation at Holby City Hospital. Series producer Diana Kyle intended their inclusion to have an "instant impact on the wards." Anderson was selected to play Oliver; he spent time with a real F1 doctor and trained with the programme`s medical advisors to prepare for the part. It took him around six months to ease into the role, and a further six to feel comfortable in it.